components/plugins/renderer/plugin_placeholder.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_PLUGINS_RENDERER_PLUGIN_PLACEHOLDER_H_
   6 #define COMPONENTS_PLUGINS_RENDERER_PLUGIN_PLACEHOLDER_H_
   7
   8 #include "components/plugins/renderer/webview_plugin.h"
   9 #include "content/public/common/webplugininfo.h"
  10 #include "content/public/renderer/context_menu_client.h"
  11 #include "content/public/renderer/render_frame_observer.h"
  12 #include "content/public/renderer/render_process_observer.h"
  13 #include "gin/wrappable.h"
  14 #include "third_party/WebKit/public/web/WebPluginParams.h"
  15
  16 namespace content {
  17 struct WebPluginInfo;
  18 }
  19
  20 namespace plugins {
  21 // Placeholders can be used if a plug-in is missing or not available
  22 // (blocked or disabled).
  23 class PluginPlaceholder : public content::RenderFrameObserver,
  24                           public WebViewPlugin::Delegate,
  25                           public gin::Wrappable<PluginPlaceholder> {
  26  public:
  27   static gin::WrapperInfo kWrapperInfo;
  28
  29   WebViewPlugin* plugin() { return plugin_; }
  30
  31   void set_blocked_for_prerendering(bool blocked_for_prerendering) {
  32     is_blocked_for_prerendering_ = blocked_for_prerendering;
  33   }
  34
  35   void set_allow_loading(bool allow_loading) { allow_loading_ = allow_loading; }
  36
  37  protected:
  38   // |render_frame| and |frame| are weak pointers. If either one is going away,
  39   // our |plugin_| will be destroyed as well and will notify us.
  40   PluginPlaceholder(content::RenderFrame* render_frame,
  41                     blink::WebLocalFrame* frame,
  42                     const blink::WebPluginParams& params,
  43                     const std::string& html_data,
  44                     GURL placeholderDataUrl);
  45
  46   virtual ~PluginPlaceholder();
  47
  48   void OnLoadBlockedPlugins(const std::string& identifier);
  49   void OnSetIsPrerendering(bool is_prerendering);
  50
  51   void SetMessage(const base::string16& message);
  52   void SetPluginInfo(const content::WebPluginInfo& plugin_info);
  53   const content::WebPluginInfo& GetPluginInfo() const;
  54   void SetIdentifier(const std::string& identifier);
  55   blink::WebLocalFrame* GetFrame();
  56   const blink::WebPluginParams& GetPluginParams() const;
  57   bool LoadingAllowed() const { return allow_loading_; }
  58
  59   // Replace this placeholder with a different plugin (which could be
  60   // a placeholder again).
  61   void ReplacePlugin(blink::WebPlugin* new_plugin);
  62
  63   // Hide this placeholder.
  64   void HidePlugin();
  65
  66   // Load the blocked plugin.
  67   void LoadPlugin();
  68
  69   // gin::Wrappable method:
  70   virtual gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
  71       v8::Isolate* isolate) OVERRIDE;
  72
  73  private:
  74   // WebViewPlugin::Delegate methods:
  75   virtual void ShowContextMenu(const blink::WebMouseEvent&) OVERRIDE;
  76   virtual void PluginDestroyed() OVERRIDE;
  77
  78   // RenderFrameObserver methods:
  79   virtual void OnDestruct() OVERRIDE;
  80
  81   // Javascript callbacks:
  82
  83   // Load the blocked plugin by calling LoadPlugin().
  84   void LoadCallback();
  85
  86   // Hide the blocked plugin by calling HidePlugin().
  87   void HideCallback();
  88
  89   void DidFinishLoadingCallback();
  90
  91   void UpdateMessage();
  92
  93   blink::WebLocalFrame* frame_;
  94   blink::WebPluginParams plugin_params_;
  95   WebViewPlugin* plugin_;
  96
  97   content::WebPluginInfo plugin_info_;
  98
  99   base::string16 message_;
 100
 101   // True iff the plugin was blocked because the page was being prerendered.
 102   // Plugin will automatically be loaded when the page is displayed.
 103   bool is_blocked_for_prerendering_;
 104   bool allow_loading_;
 105
 106   bool hidden_;
 107   bool finished_loading_;
 108   std::string identifier_;
 109
 110   DISALLOW_COPY_AND_ASSIGN(PluginPlaceholder);
 111 };
 112
 113 }  // namespace plugins
 114
 115 #endif  // COMPONENTS_PLUGINS_RENDERER_PLUGIN_PLACEHOLDER_H_